Math & Technology

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A compact device that attaches to a smartphone can process a blood sample to diagnose HIV or syphilis. The device performed well in a field test in Rwanda.

Samiksha Nayak

Calabi-Yau manifolds like this one represent extra dimensions tightly curled and wound up so they can't be detected. The question of how many dimensions of space there actually are is one of the top scientific mysteries for 21st century scientists to solve.